161718975

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{181}}^1$

素因数の和:246

約数の個数: 108

約数和(自身を含む): 335337912

約数和(自身を除く): 173618937

約数列:

[1, 3, 5, 9, 11, 15, 19, 25, 33, 45, 55, 57, 75, 95, 99, 165, 171, 181, 209, 225, 275, 285, 361, 475, 495, 543, 627, 825, 855, 905, 1045, 1083, 1425, 1629, 1805, 1881, 1991, 2475, 2715, 3135, 3249, 3439, 3971, 4275, 4525, 5225, 5415, 5973, 8145, 9025, 9405, 9955, 10317, 11913, 13575, 15675, 16245, 17195, 17919, 19855, 27075, 29865, 30951, 35739, 37829, 40725, 47025, 49775, 51585, 59565, 65341, 81225, 85975, 89595, 99275, 113487, 149325, 154755, 178695, 189145, 196023, 257925, 297825, 326705, 340461, 447975, 567435, 588069, 718751, 773775, 893475, 945725, 980115, 1633525, 1702305, 2156253, 2837175, 2940345, 3593755, 4900575, 6468759, 8511525, 10781265, 14701725, 17968775, 32343795, 53906325, 161718975]

約数ペア:

[(1, 161718975), (3, 53906325), (5, 32343795), (9, 17968775), (11, 14701725), (15, 10781265), (19, 8511525), (25, 6468759), (33, 4900575), (45, 3593755), (55, 2940345), (57, 2837175), (75, 2156253), (95, 1702305), (99, 1633525), (165, 980115), (171, 945725), (181, 893475), (209, 773775), (225, 718751), (275, 588069), (285, 567435), (361, 447975), (475, 340461), (495, 326705), (543, 297825), (627, 257925), (825, 196023), (855, 189145), (905, 178695), (1045, 154755), (1083, 149325), (1425, 113487), (1629, 99275), (1805, 89595), (1881, 85975), (1991, 81225), (2475, 65341), (2715, 59565), (3135, 51585), (3249, 49775), (3439, 47025), (3971, 40725), (4275, 37829), (4525, 35739), (5225, 30951), (5415, 29865), (5973, 27075), (8145, 19855), (9025, 17919), (9405, 17195), (9955, 16245), (10317, 15675), (11913, 13575)]